First of all you will need to begin with the Showdown Tour, there are four tiers you will need to complete to finish the Showdown Tour, the first tier being PRO, and the Final tier being LEGEND. In each tier there are several events you need to pass by coming in the top three to unlock the next event. After completing the first event you will unlock the Welcome to the show achievement. The first event is also a good place to earn the Hard Charger achievement, you can use all of your boost in one attempt on the long straight. Once you have completed the first event you can restart the event or just move on to the next one and try to unlock the Ego Boost achievement for not using any of your boost during a race you win. I would suggest not to move onto the next event until you have won the previous event because you will want to unlock the Bronze!, Silver! and Gold! achievements all at once. As you move along the Showdown Tour you will need to complete several different types of events such as Rampage and Trick Rush. The achievements Wrecker, Survivor, Stylin' and Profilin', Rust in Pieces, Mixed Grill, Comeback King, Zero to Hero, Jack of all Trades, Dont Push Me, Demolition, Crash-Bang-Wallop - What a Video, Burst the Bubble and Balletic will be easiest to do in the earlier events in the PRO tour. You can earn a total of 560 from the Showdown Tour.

Step 2: Joyride

From the main menu, select joyride, from here you have a choice to visit either of the two compounds, Yokohama and Battersea. First, start on Yokohama. The Yokohama area contains 75 missions that need to be completed and 60 hidden packages that need to be found. Once you have completed half of the missions in Yokohama you will unlock the Dock Worker achievement, then once you have completed all 75 missions you will unlock the Hoonzilla achievement, now you can have a go at finding the remaining hidden packages as you will find most of them while attempting the missions. Your next step would now be to move onto the Battersea compound. The Battersea area contains 75 missions that need to be completed and 40 hidden packages that need to be found. Once you have completed half of the missions in Battersea you will unlock the London Calling achievement, then once you have completed all 75 missions you will unlock the Daredevil achievement. You will also unlock the achievement Hoonigan for completing all the missions from both compounds. Your final stage would be to find the remaining hidden packages. Once you have found all 60 packages in Yokohama and all 40 in Battersea you will unlock the Treasure Hunter achievement. A total of 165 is available from Joyride.

Step 3: Multiplayer

Most of the online achievements will come just through playing through different events, and most are quite easy. The only difficult one being the Loot Carrier achievement, but this can be unlocked through boosting just like the others. To get the achievements Household Name, Rising Star and Showdown Superstar you must play matches online to earn fans which increases your level. Points are awarded for your finishing position, the number of players in the lobby, and if you are lower levels than people you beat you will earn an underdog bonus. The final achievements Showdown Haulage Co and Team Awesome should come through playing regularly, but if not can be boosted.

Step 4: Clean Up

GOLD! - 100

You completed the Showdown Tour and won Gold in each event

The Showdown Tour is the career mode in DiRT Showdown. You unlcok the achievement by coming first in all events. This achievement can be unlocked on any difficulty so selecting the lowest setting will be your best bet if your having trouble.

Rising Star - 30

You reached Fanbase Level 20 Online

See Showdown Superstar

Max Power - 50

You fully upgraded all your vehicles

As you are selecting your car you can press to upgrade it. Buy every upgrade for power, weight and handling. Repeat this for all 30 cars to unlock this achievement. You can do this will playing through the Showdown tour, or you can save up your money and spend it all in one go at the end, the choice is yours.

Hoonigan - 50

You completed all Joyride Missions

From the main menu select Joyride, you need to complete all missions from both Yokohama and Battersea to unlock this achievement. The missions consist of Jumps, Donuts, Drifts, Spins and Smashes, with jumps and smashes being the easiest to complete. To select what mission you want to do next you can press start while joyriding and select missions from the menu, pressing on the mission of your choice. Once you have completed most of the missions you will unlock the next area.

Running the Show - 30

You dominated a friend in Challenge mode

To unlock this achievement you have to gained a +10 in your tally over your friend. You will have to beat 10 challenges in a row against the same person. This can be easily obtained by having a friend send you very easy challenges to beat, but its always better to just dominate your friend beating his best scores.

Legend - 30

You achieved a podium in the Legend final

Legend is the fourth tier of the Showdown Tour. Finish in the top 3 in each event to unlock the final. In the final you must finish in the top 3 again to unlock this achievement.

Hoonzilla - 30

You completed 100% of the Yokohama Compound Missions

From the main menu select Joyride, from there select Yokohama, there are 25 missions in the first area, 25 missions in the second area, and 25 missions in the third area. Once you have completed all 75 missions you will unlock the achievement.

Daredevil - 30

You completed 100% of the Battersea Compound Missions

From the main menu select Joyride, from there select Battersea, there are 25 missions in the first area, 25 missions in the second area, and 25 missions in the third area. Once you have completed all 75 missions you will unlock the achievement.

Checkpoint King - 30

You won a Speed Skirmish event

To unlock this achievement you must win a Speed Skirmish event online, in a Speed Skirmish event you have drive through all the checkpoints, then to the finish mark that appears at the end.

You've Created a Monster - 20

You fully upgraded a vehicle

In the menu where you can pick a car, press to upgrade it. Buy all upgrades for power, weight and handling for that car, and the achievement will unlock.

For this achievement you must enter a rampage event and you have to destroy 5 cars in a row without getting destroyed yourself. A good tactic to use is to let the other cars do the work for you and as soon as an opposing car is low on health, deliver the killer blow.

Household Name - 10

You reached Fanbase Level 10 Online

See Showdown Superstar

Survivor - 20

You survived for 2 minutes or more in Hard Target

In the survivor mode you are all alone, as time goes by more and more cars will enter the arena with one goal, to destroy your car.You have to survive for 2 minutes or more to get unlock this achievement. Make use of obstacles in the arena, hiding behind them and dodging through them, also looking behind and sideways to see your enemy coming.

To increase your level online you must compete in events to earn you earn fans. You get more fans for finishing first and having a full lobby. Obtain enough fans to eventually reach level 30. This can also be done in private online matches!

Silver! - 20

You completed the Showdown Tour with at least a Silver in each event

See Gold!

Showdown Haulage Co. - 20

You dropped the Flag off 5 times in a Transporter event

To play a Transporter round you must be online, grab the flag and then drive it to the finish location that is indicated. Do this five times in a single match to get the achievement. This can also be done in private online matches.

Money Maker - 20

You earned a total of $1,000,000

Earn a total of 1 million over your career. Not too difficult as you should be close to the million by the end of the showdown tour, money can also be earned online to get the achievement.

Mmmm Donuts! - 20

You completed the Donut King mission in the Yokohama Construction Site area

At the main menu select Joyride and then the Yokohama compound. The Donut King mission is in the second area of Yokohama which unlocks after completing 20 missions in the first area. Complete a double donut in and out the indicated building and under the trailer to unlock the achievement.

Stylin' and Profilin' - 20

You scored 300,000 points in a Trick Rush event in the Showdown Tour

To get this achievement you must score 300,000 points or more in a trick rush event, a good tactic is to hit all the smashes first, they are simple a will get your multiplayer up to at least x2, next completing the jumps and finally the drifts and donuts, remember not to do the same trick over and over again as you will become stale and get less points.

When a friend sends you a challenge you will have to beat their score/time, if you can do this in the first three attempts you will unlock the achievement.

Rust in Pieces - 20

You wrecked 20 vehicles in the Lafayette Eulogy

The Lafayette Eulogy is a car that you can unlock pretty early on in the game. Buy the car and use it to wreck 20 other cars. This does not have to be done in only one race.

Treasure Hunter - 15

You collected all 100 Hidden Packages

From the main menu select Joyride. You will need to collect all 100 Hidden Packages from the two locations, there are 60 packages in Yokohama and 40 packages in Battersea. The hidden packages are the DiRT Showdown icon's. The video's below show the locations of all hidden packages in each area.

From the main menu select multiplayer and then select team event, if your team wins you will unlock the achievement.

Champion - 15

You achieved a podium in the Champion final

Champion is the third tier of the Showdown Tour. Finish in first, second or third place to get to the final. In the final again finish first, second or third place to unlock the achievement.

AllStar - 15

You achieved a podium in the AllStar final

All Star is the second tier of the Showdown Tour. Finish first, second or third to get to the final. In this final again finish first, second or third to unlock the achievement.

Hard Charger - 10

You used all your boost in one go and kept out of trouble

The Hard Charger achievement is unlocked the easiest in the first event of the Showdown Tour because there is a long straight with few obstacles. Your boost bar is down in the bottom right hand corner of the screen make sure this is full. Press to use your boost as you enter the long straight and don't let go until the blue bar is empty, if you didn't hit any obstacles and used the boost in one attempt the achievement should unlock.

You pulled it together and pulled the opposition apart to achieve a podium in the Showdown Tour

To earn this achievement you must be in last place in a rampage event, then when the double points starts in the final 30 seconds score enough points to finish in the top 3. For the first minute and a half score enough points to be close to 7th place, then as the timer hits 30 seconds do as much damage as possible. Keep an eye out for cars with orange/red health as one good hit will finish them and give you the highest points. Hitting cars in the side does the most damage to them.

To unlock this achievement you must dominate all sectors on the FINAL LAP. If you have dominated any sectors before the final lap the achievement will not unlock, do not go the fastest in any of the sectors until the final lap.

Pro - 10

You achieved a podium in the Pro final

Pro is the first tier of the Showdown Tour. Finish in first, second or third places to get to the final. Then finish first, second or third place in the final to unlock the achievment.

No Turning Back - 10

You sent a Challenge to a friend

After you complete a race, you will be asked if you want to send a challenge to your friend. You can only send challenges to friends that have player DiRT Showdown.

Jack of All Trades - 10

You completed a Race-Off, Rampage and Head 2 Head event

This achievement will come while playing through the Showdown Tour, you only have to complete a Race-Off, Rampage and a Head 2 Head race, you do not have to win them.

Huntsman - 10

You came 1st in a Smash Hunter event

To unlock this achievement you must win a Smash Hunter event, to win a Smash Hunter event you have to smash the coloured blocks indicated in the quickest time.

Don't Push Me - 10

You got the First Blood bonus

To unlock this achievement you must enter a Knock Out event and be the first to push someone off the platform. Using your boost will help you push somebody off the platform.

Demolition! - 10

You wrecked your first opponent in Rampage

To unlock this achievement you must enter a Rampage event and wreck an opponent, keep driving into there vehicle until their health bar is empty.

Crash-Bang-Wallop - What a Video - 10

You viewed a Crashback replay

When you hit an opposing vehicle really hard a little icon will appear in the bottom left corner of the screen, press to view the Crashback replay and the achievement will unlock.

Burst the Bubble - 10

You were in 1st at each Elimination period

To get this achievement you must be in 1st place throughout the whole elimination period in an Eliminator event, the most tricky part of the achievement is getting into first place before the first elimination which is within the first 30 seconds of the race. once you have got into 1st place stay there until the end of the race.

Bi-Winning - 10

You completed a Splitscreen event

From the main menu, select multiplayer, and then splitscreen, complete the race to unlock the achievement.

Balletic - 10

You completed a clean Head 2 Head run

To unlock this achievement you must complete a Head 2 Head run with crashing or bumping into anything.

Time to 1000 I would even say more than 25. Around 30-40
Because Showdown town is a minium of 92 races for all Achievements (first in all races for example). That alone are around 3 minutes * 92 races (without loading times) which are 276 minutes (~5hours)
But online takes nearly forever. You need 250.000xp for Lv 30. But the real pain are the 3 voting timers (20 Gametype+5 Track + 20 car seconds?) before each race and the endless loading time. The match self is in the most game types (Knock Out, Trick Rush, Rampage Domination) around 3 minutes.
A bit math.
250.000 XP needed for lv 30. You can get maximum 1000 XP if you score 1. in a full Solo game, 800 if your team wins in a full team game...
This is a minimum of 250 races. I have needed around 700 races despite of around 300 wins because often games are not full and so on. Have one time seen a guy with 420 races who was lv 30, even that are around 20 hours work.
Btw. the boosting trick with "trick rush" donīt work. I have tested it and both teams only got 200 points (we were 8 players) despite of place 1 for both teams..

To unlock this achievement you have to gained a +10 in your tally over your friend. You will have to beat 10 challenges in a row against the same person. This can be easily obtained by having a friend send you very easy challenges to beat, but its always better to just dominate your friend beating his best scores.

Just thought I would add this.
If you don't have a friend who has played the game and can't find someone to help you, you can use a silver account on the same xbox. Just send a challenge from the dummy account to your real account and beat it 10 times, the same as you would with a friend.

The "Max Power" (upgrade all vehicles) achievement is only singleplayer in theory. Once you win all Showdown Tour races you cannot earn any more money in singleplayer. You can win a 1000 $ per challenge, but it would probably take ages to earn enough money that way (even if you do it with a second profile, and simply forfeit the challenges, you still have to complete events to send them).

So basically you have to play a lot of multiplayer to get that achievement, or waste endless hours on challenges.

As for the Comeback King achievement, so far it is the hardest one for me. The 7th guy has around 500 points every time, and I actually often get more for not doing anything and poeple simply bashing into me. So not only is it hard to get from 500 to around 6000 in 30 seconds, it is sometimes hard to stay in 8th place. Sick. Any recommendations?

Harry, I used the Kohler and drove around the outside using the right analogue to check for likely collisions and avoid them, if you need to 'help' the others to get past you park in the centre and hold the handbrake and it's rare to get points even if shunted into other people.
You will get hit a lot though so i tried to get wrecked before double time started with this method.

I did this on intermediate whereas every guide i looked at says try beginner. I'm guessing the other cars score higher as i had just over 1000 when the double time started and was still 8th.
From then it's a case of getting lucky with some terminal crashes.

I only did this yesterday so it's fresh in the mind. It did take about 6 or 7 tries before i got enough points for a podium finish.

I play offline, and there is no way i could reach that score, i only get 980.000$ everything at gold and now they pay me 0 for each race, and this wasn't enougth to fully upgrade all cars, and there is some other achievs i doesn't know how to get, maybe multiplayer/online.